<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <link rel="stylesheet" href="./bootstrap-3.3.7-dist/css/bootstrap.min.css">
    <style>
.caption{
    text-align: center;
   
}
.thumbnail{
    max-width:310px;
    margin: 0 auto;
    widows: 292.5px;
    height: 345.25px;
    margin-top: 30px;
}
.jumbotron{
  text-align: center;
  color: #fff;
  margin-top: -25px;
  background-image: url(./img/1.png);
  background: linear-gradient(45deg,#020031,#6d3353);
}
  .add{
    color: darkgrey;
  }
  .footer, .footer a {
    color: #777;
}
.footer {
    padding: 30px 0;
    border-top: 1px solid #e5e5e5;
    margin-top: 70px;
}
h4{
  color: #1a2c79;
}
    </style>
</head>
<body>
     <!-- 导航条 -->
     <nav class="navbar navbar-inverse">
            <div class="container">
              <!-- Brand and toggle get grouped for better mobile display -->
              <div class="navbar-header">
                <button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#bs-example-navbar-collapse-1" aria-expanded="false">
                  <span class="sr-only">Toggle navigation</span>
                  <span class="icon-bar"></span>
                  <span class="icon-bar"></span>
                  <span class="icon-bar"></span>
                </button>
                <a class="navbar-brand hidden-sm" href="#">Bootstrap中文网</a>
              </div>
          
              <!-- Collect the nav links, forms, and other content for toggling -->
              <div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">
                <ul class="nav navbar-nav">
                  <li class="active"><a href="#">Bootstrap3中文文档<span class="sr-only">(current)</span></a></li>
                  <li><a href="#">Bootstrap4中文文档</a></li>
                  <li><a href="#">Sass教程</a></li>
                  <li><a href="#">Less教程</a></li>
                  <li><a href="#">jquery API</a></li>
                  <li><a href="#">网站实列</a></li>

                  <!-- <li class="dropdown">
                    <a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false">Dropdown <span class="caret"></span></a>
                    <ul class="dropdown-menu">
                      <li><a href="#">Action</a></li>
                      <li><a href="#">Another action</a></li>
                      <li><a href="#">Something else here</a></li>
                      <li role="separator" class="divider"></li>
                      <li><a href="#">Separated link</a></li>
                      <li role="separator" class="divider"></li>
                      <li><a href="#">One more separated link</a></li>
                    </ul>
                  </li> -->
                </ul>
                <!-- <form class="navbar-form navbar-left">
                  <div class="form-group">
                    <input type="text" class="form-control" placeholder="Search">
                  </div>
                  <button type="submit" class="btn btn-default">Submit</button>
                </form> -->
                <ul class="nav navbar-nav navbar-right">
                  <li class="hidden-sm"><a href="#">关于</a></li>
                  <!-- <li class="dropdown">
                    <a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false">Dropdown <span class="caret"></span></a>
                    <ul class="dropdown-menu">
                      <li><a href="#">Action</a></li>
                      <li><a href="#">Another action</a></li>
                      <li><a href="#">Something else here</a></li>
                      <li role="separator" class="divider"></li>
                      <li><a href="#">Separated link</a></li>
                    </ul>
                  </li> -->
                </ul>
              </div><!-- /.navbar-collapse -->
            </div><!-- /.container-fluid -->
          </nav>
          <!-- 巨幕 -->
          <div class="jumbotron">
            <h1>Bootstrap</h1>
            <p>简洁、直观、强悍的前端开发框架，让web开发更迅速、简单。</p>
            <p><a class="btn btn-primary btn-lg" href="#" role="button">Bootstrap3中文文档(v3.3.7)</a></p>
            <a class="add" href="#"><h5>Bootstrap2中文文档(v2.3.2)</h5></a>
          </div>
    <!-- 页面 -->
    <div class="container">
        <div class="row">

        <div class="col-xs-12 col-sm-6 col-md-4 col-lg-3">
    <div class="thumbnail">
      <img src="./img/expo.png" alt="...">
      <div class="caption">
          <a href="#">
                <h3>优站精选</h3>
                        <h5>Bootstrap 网站实例</h5>
          </a>
        <p>Bootstrap 优站精选频道收集了众多基于 Bootstrap 构建、设计精美的、有创意的网站。</p>
      </div>
    </div>
  </div>

  <div class="col-xs-12 col-sm-6 col-md-4 col-lg-3">
        <div class="thumbnail">
          <img src="./img/webpack.png" alt="...">
          <div class="caption">
              <a href="#">
                    <h3>Webpack</h3>
                            <h5>是前端资源模块化管理和打包工具</h5>
              </a>
            <p>Webpack 是当下最热门的前端资源模块化管理和打包工具。它可以将许多松散的模块按照依赖和规则打包成符合生产环境部署的前端资源。</p>
          </div>
        </div>
      </div>
      <div class="col-xs-12 col-sm-6 col-md-4 col-lg-3">
            <div class="thumbnail">
              <img src="./img/download.png" alt="...">
              <div class="caption">
                  <a href="#">
                        <h3>React</h3>
                                <h5>用于构建用户界面的 JavaScript 框架</h5>
                  </a>
                <p>React 起源于 Facebook 的内部项目，是一个用于构建用户界面的 JavaScript 库。</p>
              </div>
            </div>
          </div>
          <div class="col-xs-12 col-sm-6 col-md-4 col-lg-3">
                <div class="thumbnail">
                  <img src="./img/typescript.png" alt="...">
                  <div class="caption">
                      <a href="#">
                            <h3>TypeScript </h3>
                                    <h5>中文手册</h5>
                      </a>
                    <p>TypeScript 是由微软开源的编程语言。它是 JavaScript 的一个超集，而且本质上向这个语言添加了可选的静态类型和基于类的面向对象编程。</p>
                  </div>
                </div>
              </div>
              <div class="col-xs-12 col-sm-6 col-md-4 col-lg-3">
                    <div class="thumbnail">
                      <img src="./img/svelte.png" alt="...">
                      <div class="caption">
                          <a href="#">
                                <h3>Svelte</h3>
                                        <h5>中文网</h5>
                          </a>
                        <p>Svelte 是构建 Web 应用程序的一种新方法。Svelte 是一个编译器，它将声明性组件转换成高效的 JavaScript 代码，并像做外科手术一样细粒度地更新 DOM。</p>
                      </div>
                    </div>
                  </div>
                  <div class="col-xs-12 col-sm-6 col-md-4 col-lg-3">
                        <div class="thumbnail">
                          <img src="./img/nextjs.png" alt="...">
                          <div class="caption">
                              <a href="#">
                                    <h3>Next.js</h3>
                                            <h5>中文文档</h5>
                              </a>
                            <p>Next.js 是一个轻量级的 React 服务端渲染应用框架。</p>
                          </div>
                        </div>
                      </div>
                      <div class="col-xs-12 col-sm-6 col-md-4 col-lg-3">
                            <div class="thumbnail">
                              <img src="./img/babeljs.png" alt="...">
                              <div class="caption">
                                  <a href="#">
                                        <h3>Babel </h3>
                                                <h5>是一个 JavaScript 编译器。</h5>
                                  </a>
                                <p>Babel 是一个 JavaScript 编译器。Babel 通过语法转换器支持最新版本的 JavaScript 语法。</p>
                              </div>
                            </div>
                          </div>
                          <div class="col-xs-12 col-sm-6 col-md-4 col-lg-3">
                                <div class="thumbnail">
                                  <img src="./img/nodejs.png" alt="...">
                                  <div class="caption">
                                      <a href="#">
                                            <h3>Node.js</h3>
                                                    <h5>中文文档 / 手册</h5>
                                      </a>
                                    <p>Node.js 是一个基于 Chrome V8 引擎的 JavaScript 运行环境。Node.js 使用了一个事件驱动、非阻塞式 I/O 的模型，使其轻量又高效。</p>
                                  </div>
                                </div>
                              </div>
        </div>
    </div>
    <footer class="footer ">
      <div class="container">
        <div class="row footer-top">
          <div class="col-md-6 col-lg-6">
            <h4>
              <img src="./img/2.png">
            </h4>
            <p>我们一直致力于为广大开发者提供更多的优质技术文档和辅助开发工具！</p>
          </div>
          <div class="col-md-6  col-lg-6">
            <div class="row about">
              <div class="col-sm-3">
                <h4>关于</h4>
                <ul class="list-unstyled">
                  <li><a href="/about/">关于我们</a></li>
                  <li><a href="/ad/">广告合作</a></li>
                  <li><a href="/links/">友情链接</a></li>
                  <li><a href="/hr/">招聘</a></li>
                </ul>
              </div>
              <div class="col-sm-3">
                <h4>联系方式</h4>
                <ul class="list-unstyled">
                  <li><a href="#" title="Bootstrap中文网官方微博" target="_blank">新浪微博</a></li>
                  <li><a href="#">电子邮件</a></li>
                </ul>
              </div>
              <div class="col-sm-3">
                <h4>旗下网站</h4>
                <ul class="list-unstyled">
                  <li><a href='#' target="_blank">BootCDN</a></li>
                  <li><a href="#" target="_blank">Packagist中国镜像</a></li>
                </ul>
              </div>
              <div class="col-sm-3">
                <h4>特别致谢</h4>
                <ul class="list-unstyled">
                  <li><a href="#" target="_blank">猫云</a></li>
                  
                </ul>
              </div>
            </div>
    
          </div>
        </div>
        <hr>
        <div class="row footer-bottom">
          <ul class="list-inline text-center">
            <li><a href="#" target="_blank">京ICP备11008151号-6</a></li><li>京公网安备11010802014853</li>
          </ul>
        </div>
      </div>
    </footer>
    <script src="./jquery-3.6.0.min.js"></script>
    <script src="./bootstrap-3.3.7-dist/js/bootstrap.min.js"></script>
</body>
</html>